Edge on Science will offer a one-week team engineering workshop in Catapult Engineering for ages 10-14, July 22-26 at Regis College in Waltham. Register with promo code CATAPULT50 by June 10 to save $50. (Note: The registration page shows the June 24-28 session is full with a wait list, so scroll down that page for the July 22-26 session.)